Frederick gifford



F. GIFFORD.

GRAINING PROCESS.

APPLICATION FILED Iu Ind Oct. 7, 1919.

Pat

`:1.... =m m f FREDERICK GIFFORD, 0F JAMESTOWN, NEW- YORK.

GRAINING PROCESS.

Specification of Letters Patent.

Patented oet. a, raie.

Application led J' une 5, 1919, Serial No. 301,919.

To all whom t may concern:

Be it known that I, FREDERICK GrrroRD, a citizen of the United States, residing at Jamestown, in' the county of Chautauqua.

and State of New York, have invented new and useful Improvements in Graining Processes, of which the following is a specification.

This invention relates to a methodof producing imitations of wood graining, marble and the like upon furniture and other surfaces, and more particularly upon metal furniture, such as desks, cabinets, filing cases, &c.

rlhe object of my invention is the provision of an improved method by which natural woods and other grained materials, including the shading and blending of the background, are closely and faithfull imifated, and which produces'this desirai le result with a minimum number of o erations, thus expediting the work and e ecting a material saving in cost.

In the accompanying drawings:

Figure l is a face View of a pattern-plate embodying thb invention. Fig. 2 is a side elevation of one of the grinding tools which may 'be employed in carrying out the method. Fig. 3 is a side view of another form. Fig. 4 is anedge view of the lastmentioned tool.

Similar characters of reference indicate corresponding parts throughout the several views. y

ln practising the process, the pores or dark line l of the design or pattern to be imitated, say oak-graining for example, are cut in a plate 2 of brass or other suitable material by etching or otherwise. Preferably this is done by coverincr the plate with an acid-resisting color, as black-paint composition; vdrawing or painting the desired design upon the coated plate; scratching the pores in the plate, and finally etching them therein by pouring a. suitable acid over the plate, in a manner common to that process. After the design has been etched to the required depth, the color-coating is removed from the plate by an appropriate solvent, as benzin or turpentine. Y

The background ofthe design, including the veins or flakes 3 and the shading or blending 4 is neXt produced on the plate by abrasion or grinding of itsv surface at the proper places and to a greater or less depth, as required. This is preferably accomf plished by means of one or more small emery or grindlng wheels, a pointed or conical wheel 5 bein used for grinding the veining or other sma l work of the design, and a cylindrical or wider-faced wheel 6 for grinding the shaded parts of the background between the pores l.

After removing the dust from the etched and abraded plate, thel required shade of graining color is applied over its entire ,surface with a brush, or otherwise, and the surplus is removed with a leather or other suitable scraper, leaving the coloring matter only on the etched and abraded parts of the plate. For example, for reproducing oak, the plate is coated with` a combination of yellow, brown and ocher; and formahogany with a ground color of orange and red. y

An ordinary printers roller is next passed over the plate to take up the pattern, and

- this roller is then rolled over the surface of the article of furniture or other object to be grained which has previously received a priming coat of color of the desired shade, as usual. Finally, the grained work is dried and v-arnished. i

After the taking of each impression the -roller is Washed with a solvent, as benzin,

and the' plate is re-coated with graining 35 color.,

By subjecting the pattern-plate to the above-described grindin or abrasive treatment, the'edges of the igh and low lights are shaded or blended into each other in close imitation to those of natural wood or other grained material. As the blending and shading are produced u 0n the pattern' plate itself and not painte by hand after the transferof the design'to the object, as hitherto practised, the entire design is trans ferred to the object by a single operation. Such hand-shading of the grained object is thus dispensed with, effecting an important saving in time and a material reduction in the cost of the work While the improved method is herein shown and described in connection with wood-graining, it is equally practicable for producing imitations of various other veined or variegated material, such as marble.

While lt prefer to produce the desired de MND `sign in the pattern-plate byetching, I do not Wish' to be limited to that particular means or process, as the design can, if desired, be cut by other suitable means, such as engraving.

I claim as my invention:

1. The hereindescribed method of preparing a pattern-plate 'for Wood graining and the like, Which consists in cutting the desired design in the plate and forming the background of the design by abrasion of the surface of the plate.

2. The hereindescribed method of preparing a pattern-plate for Wood graining and the like, which consists in cutting the desired design in the plate and blending the high and low lights of the design by abrasion of the surface of the plate.

3. The hereindescribed method of preparing a pattern-plate for Wood graining and the like, which consists in cutting the desired design in the plate and producing the background of the design by grinding of the surface of the plate. I

4. The hereindesoribed method of preparing a pattern-plate for Wood graining and the like, which consists in etching the design in the plate, and producing the high and low lights and blending thereof by grinding of the surface of the plate.

FREDERICK GIFFoRD. 

